llvm-project/llvm/test/CodeGen/AArch64/inlineasm-ldr-pseudo.ll
Fangrui Song 4010ddf780
[MC,AArch64] Create mapping symbols with non-unique names
Add `createLocalSymbol` to create a local, non-temporary symbol.
Different from `createRenamableSymbol`, the `Used` bit is ignored,
therefore multiple local symbols might share the same name.

Utilizing `createLocalSymbol` in AArch64 allows for efficient mapping
symbol creation with non-unique names, saving .strtab space.
The behavior matches GNU assembler.

Pull Request: https://github.com/llvm/llvm-project/pull/99836
2024-07-22 09:03:05 -07:00

25 lines
1022 B
LLVM

; We actually need to use -filetype=obj in this test because if we output
; assembly, the current code path will bypass the parser and just write the
; raw text out to the Streamer. We need to actually parse the inlineasm to
; demonstrate the bug. Going the asm->obj route does not show the issue.
; RUN: llc -mtriple=aarch64 < %s -filetype=obj | llvm-objdump --no-print-imm-hex --show-all-symbols -d - | FileCheck %s
; CHECK-LABEL: <foo>:
; CHECK: d29579a0 mov x0, #43981
; CHECK: d65f03c0 ret
define i32 @foo() nounwind {
entry:
%0 = tail call i32 asm sideeffect "ldr $0,=0xabcd", "=r"() nounwind
ret i32 %0
}
; CHECK-LABEL: <bar>:
; CHECK: 58000040 ldr x0, 0x10
; CHECK: d65f03c0 ret
; Make sure the constant pool entry comes after the return
; CHECK-LABEL: <$d>:
define i32 @bar() nounwind {
entry:
%0 = tail call i32 asm sideeffect "ldr $0,=0x10001", "=r"() nounwind
ret i32 %0
}